Answer:
9
Step-by-step explanation:
25-7=18
half of 18 is 9
Well just substitute y (the first equation) into the second equation.
So
5x-4(5-3x)=-3
Then just solve the equation from there.
5x-20+12x=-3
17x=17
x=1
and if you need y, y=2
Answer:
= 18x + 4y hope this helps :)
Step-by-step explanation:
You would divide negative 3 (-3) from both sides to keep the c by itself. When you divide a positive by a negative it becomes negative.
Dividing 15 by -3 would equal -5, so c = -5
Cubic centimeters, because cubic is used for volume. Hope this helps! Happy Studying!